■ 재질 : Polycarbonate, Highly visible red nylon ball

■ Ball ratates in a circular channel during flow

■ Continuity and relative flow rate indicated by speed of ball's rotation

■ Maximum working pressure → 10 p.s.i.g

■ Minimum flow rate with water → 50ml/minute in a horizontal position

                                                 140ml/minute in a vertical position

■ Minimum flow rate with air → 3 liters/minute in a horizontal position

                                              8 liters/minute in a vertical position